Lamp-shade holder



T DAHL LAMP SHADE HOLDER Filed Feb. 10. 1925 Aug. 2, 1927.

INVENTOR T/zarc Dd/ZZ U =4 ATTORNEYS Patented :2, rear. g p

Uta FEED STATES THURE PATENT OFFICE;

DAI-IL, OF NEW YORK, N. Y., ASSIGNOR TO CORONA CORPORATION, OF NEW YORK,N. Y., A CORPORATION OF NEW YORK. i 1

LAMP-SHADE HOLDER.

Application filed February collar is to be tin-endedwhich serves tomount the shade.

Inasmuch as the shell is usually substantially enclosed by a decorativesocket cover member, the shade supporting member is attached by reachingthe hand inside of the lamp shade and attempting the threadingoperation, which even under the most advantageous conditions, involvespreliminary groping to bring the threads int-o registry, followed by aprolonged threading operation to screw the holder home. It is especiallydiflicult to perform the turning or screwing operation within the shadeof small diameter.. Furthermore, unless the thread on the shade holdermatches precisely that on the socket, which in practice, is frequentlynotthe case, and is correctly enteredthereon the parts may jam in theattempt to couple said members, and forcible rotation either to screwhome or to remove the holder preparatory to a renewed attempt to coupleit may result in twisting the socket leads with the danger of a shortcircuit.

It among the objects of my invention to overcome all of the above noteddifficulties without complicating the construction, or adding to itscost, or detracting from the security of attachment and withoutinterfering with ready removal of the shade holder from the socket.

In a preferred embodiment of the invention, the metallic shadesupporting collar, in addition to being screw threaded is provided witha number of longitudinal slits, determining spring lingers, yieldingsutiiciently to permit thrusting the split sleeve over the exteriorthreads of the socket. The socket is thus firmly gripped by the springfingers,- the threads on which will naturally enter into matingrelationship with those on the socket. If desired, the shade holdingcollar may then be given a short turn for further security ofattachment.

Although various types of shade holders may be coupled to a socket inthis manner, I prefer to use a holder having a shade sup- 10,1925.Serial no. s,153.'

porting flange which presses the inner rim of the shade adjacent thesocket cover. In the accompanying drawings in which is shown one ofvarious possible embodiments of the' several features of the inven-Figure 1 is a disassembled view in longi tudinal section through asocket, socket cover, shade holder and shade.

Figure 2 is a. similar view parts assembled and c Figure 3 is atop planview of the shade supporting member. 1

In the drawings, I have used the refer-- ence letter A to indicate alamp shell of conventional construction. It may be housed within aconventional socket cover of general bell shape. 7 The lamp shadesupporting member is shown at C,'the shade'at D, and the lamp bulb at E.l f

More specifically, the socket memberor socket shell A is formed at itsclosed'end with a threaded nipple 10 into which screws a hollow plug 11to retain socket cover B in place, the outlet wires from. electricalterminals, in the socket (not shown)ibeing led to a suitable source ofcurrent from the plug: The usual screw threads 12 are providedon theexterior of the shell A. The shade supporting member C is of thinreadily bendable spring metal such as brass, including a cylindricalcollar portion 15 adapted to encircle the shell A and an external troughlike flange portion 16 adapted to receive and support the inwardlyturned flange 17 at the end thereby determining longitudinal springfingers which will readily flex outwardly as the collar is thrust overthe shell, the threads on the spring fingers ratcheting over the shellthreads and mating therewith.

The manner of assembling the device is to'100' engage the flange of theshade holder with the flange of the shade, insert the hand with in theshade and thrust the collar over the lamp shell or socket A. Forenhanced security the shell holding collar may be given a short turn orscrew feed over the socket threads. I

In assembled relationship, as shown in Fig. 2, the flange 17 of theshade is firmly clamped against vibration between the 10 "showing the 65I volves no change in the conventional construction of shade holdersother than the provision of a few slits which can be introduced.substantially without added cost."

Even though the collar threads lit only approximately those of thesocket, secure connection is effected by a single thrust eliminating theneed for groping to align the threads or the awkward turning of theshade holder through many revolutions, as required in constructionsdevoid of the slits.

It will thus be seen thattthere is herein described apparatus in whichthe several features of this invention are embodied, and which apparatusin its action attains the various objects of the invention and is wellsuited to meet the requirements or practical use. a y Y r v p a As manychanges could be made in the above description and many apparentlywidely different embodiments of this invention could be made withoutdeparting from V the scope thereof, it is intended that all.

matter shown or! described iii the above shall be interpreted asillustrative and not in a limiting sense. 1 i

, Having thus described my invention, what I claim as new and desire toseeureby Letters Patent is 2- 1. The combination with a lamp socketshell of the type having threads on the exterior thereof, of a. metalliclamp shade holder including a threaded collar portion adapted to engagewith the threads of the on the shell by a direct ithrust, said holderhaving a flange for sustaining the weight of a shade with its rimresting on the flange.

2.The combination with a lamp socket shell of the type having exteriorthreads thereon, of a lampshade holder including a lamp shade supportingpart and a threaded collar portion adapted to mate with the threads onthe shell, said collar comprising a plurality of spring sectionspermitting a thrust [it over the shell. i a

3. The combination with a lamp socket oi the type having threads 011 itsexterior, of a lamp shade holder including a threaded cylindricalportion having a plurality of longitudinal slits therein and including ashade clamplng flange, said cylindrical member being adapted forengagement with the'exterior ol the shell by :direct thrust and adaptedto be further tightened by rota tion.

l. The combination with a lamp socket of the typehaving exterior threadsthereon, a cover therefor, a lamp shade holder including a threadedmetallic collar portion longi tudinallysplit to permit direct thrustthereof over the threaded exterior of the socket and a lamp shadesupporting flange unitary with the collar to sustain a lamp shade andclamp itagainst the rim of the socket cover.

Signed at New York city, in the county of New York and State of NewYork, this 30th day of January A. D. 1925.

a THURE DAHL

